* {
	margin: 0;
	padding: 0;
	font-family: Helvetica, Tahoma, Arial, "Hiragino Sans GB", "Hiragino Sans GB W3", "Microsoft YaHei", STXihei, STHeiti, Heiti, SimSun, sans-serif;
	font-size: 100%;
}

#Firstscreen {
	height: 754px;
	/*border: 1px solid black;*/
	background: url(../img/bg.jpg) no-repeat center center;
	overflow: hidden;
}

.main {
	width: 0 auto;
}

.nav {
	width: 1200px;
	height: 75px;
	/*border: 1px solid black;*/
	margin: 0 auto;
	position: relative;
}

.nav_left {
	/*border: 1px solid red;*/
	height: 75px;
	width: 600px;
}

.nav_left>.qq_img {
	float: left;
	display: block;
	width: 106px;
	height: 0px;
	overflow: hidden;
	padding-top: 76px;
	font-size: 0;
	background: transparent url(../img/qq.png) no-repeat left 15px;
}

.nav_left>ul>li {
	float: left;
	list-style: none;
	margin-left: 15px;
	/*border: 1px solid black;*/
	font-size: 20px;
	line-height: 74px;
	height: 74px;
	width: 75px;
	text-align: center;
}

.nav_left>ul>li:hover {
	background: #12B7F5;
	cursor: pointer;
}
.nav_left>ul>.on{
	background: #12B7F5;
}
.nav_right {
	position: absolute;
	height: 75px;
	width: 600px;
	top: 0;
	right: 0;
	float: right;
	/*border:1px solid gold;*/
}

.nav_right>.btn {
	display: inline-block;
	outline: none;
	border-radius: 50px;
	font-size: 24px;
	width: 110px;
	height: 45px;
	text-align: center;
	line-height: 48px;
	background: #12b7f5;
	color: #fff;
	margin: 10px 200px;
}

.nav_right>ul {
	list-style: none;
	position: absolute;
	top: 0;
	right: 0;
	margin-top: 15px;
}

.nav_right>ul>li {
	float: left;
	margin-left: 35px;
	font-size: 20px;
}

.nav_right>.btn:hover {
	cursor: pointer;
	opacity: 0.5;
}

.numper {
	margin-left: 85px;
	font-size: 18px;
	color: #111111;
	text-decoration: none;
	line-height: 34px;
	margin-top: 0px;
	position: absolute;
	top: 40px;
	right: 48px;
}

.nav_right>.numper:hover {
	text-decoration: underline;
}

.context {
	height: 679px;
	/*border: 1px solid black;*/
}

.context>.one_part {
	text-align: center;
	/*border: 1px solid black;*/
	height: 675px;
	width: 850px;
	margin: 0px auto;
	perspective: 1000px;
}

.context>.one_part>.text_img {
	background: url(../img/contest.png) no-repeat center;
	width: 328px;
	height: 84px;
	margin: 70px auto;
	float: left;
}

.context>.one_part>a {
	width: 240px;
	height: 60px;
	display: block;
	position: absolute;
	top: 90px;
	/*border: 1px solid black;*/
	border-radius: 50px;
	font-size: 24px;
	text-decoration: none;
	color: #fff;
	background: -webkit-linear-gradient(left, #8686FE, #3ABCFF);
	text-align: center;
	line-height: 60px;
	margin-left: 500px;
}

.context>.one_part>img {
	margin-left: -600px;
	margin-top: 130px;
	transform: rotateX(45deg);
}

.twop {
	height: 1000px;
	position: relative;
}

.twop>.two_qq {
	background: url(../img/brand.png) no-repeat center;
	height: 300px;
	margin-right: 100px;
}

.beijing1 {
	background: url(../img/a.jpg) no-repeat center top;
	height: 100%;
	background-attachment: fixed;
	background-size: cover;
}

.three_part {
	height: 760px;
	/*border: 1px solid black;*/
	margin-top: 120px;
	min-width: 1200px;
}

.three_part>.thr_main {
	position: relative;
	width: 1200px;
	height: 100%;
	/*border: 1px solid blue;*/
	margin: 0 auto;
}

.thr_qq {
	background: url(../img/pic1.png) no-repeat center top;
	height: 100%;
	margin-left: -450px;
}

.thr_text {
	/*border: 1px solid black;*/
	width: 600px;
	height: 560px;
	position: absolute;
	top: 200px;
	left: 200px;
	overflow: hidden;
	margin-left: 300px;
}

.thr_text>h2 {
	font-size: 50px;
	font-weight: 400;
	line-height: 72px;
	text-align: right;
	letter-spacing: 12px;
}

.thr_text>h5 {
	font-size: 18px;
	text-align: right;
	color: #aaa;
	font-weight: normal;
	line-height: 30px;
	letter-spacing: 5px;
}


/*#12b7f5*/

.thr_text>a {
	text-decoration: none;
	color: #12B7F5;
	font-size: 20px;
	letter-spacing: 3px;
	margin-left: 480px;
	margin-top: 15px;
	display: block;
	opacity: 0.6;
}

.thr_text>ul {
	width: 100%;
	height: 310px;
	/*border: 1px solid black;*/
	margin-left: 238px;
	margin-top: -55px;
}

.thr_text>.tubiao {
	background: url(../img/qcall_figs.png) no-repeat 190px 41px;
	height: 100px;
	margin-left: 105px;
	margin-top: 35px;
}

.thr_text>ul>li {
	list-style: none;
	float: left;
	margin-left: 38px;
	height: 90px;
	border-right: 1px solid #ccc;
}

.thr_text>ul>li>span {
	margin-top: 70px;
	display: block;
	padding-right: 7px;
	margin-left: -5px;
}

.beijing2 {
	background: url(../img/b.jpg) no-repeat center top;
	height: 100%;
	background-attachment: fixed;
}

.four_part {
	height: 657px;
	/*border: 1px solid red;*/
	margin-top: 580px;
	background: #fff;
	/*overflow: hidden;*/
}

.four_part>.four_main {
	width: 1200px;
	height: 100%;
	border: 1px solid #fff;
	margin: 0 auto;
	position: relative;
}

.four_text {
	/*border: 1px solid red;*/
	width: 100%;
	height: 500px;
	margin-top: 105px;
}

.four_text>h2 {
	font-size: 52px;
	font-weight: normal;
	line-height: 72px;
	text-align: left;
	letter-spacing: 3px;
}

.four_text>h5 {
	font-size: 18px;
	text-align: left;
	color: #aaa;
	font-weight: normal;
	line-height: 30px;
	letter-spacing: 5px;
	margin-top: 25px;
}

.four_text>a {
	text-decoration: none;
	color: #12B7F5;
	font-size: 20px;
	letter-spacing: 3px;
	display: block;
	opacity: 0.6;
	margin-top: 15px;
	font-weight: normal;
}
.four_text>.tubiao {
	background: url(../img/qfile_figs.png) no-repeat 7px 41px;
	height: 100px;
	margin-top: 35px;
}

.four_text>ul>li {
	list-style: none;
	float: left;
	height: 90px;
	border-right: 1px solid #ddd;
	margin-left: 27px;
	margin-top: -55px;
}

.four_text>ul>li>span {
	margin-top: 70px;
	display: block;
	padding-right: 20px;
	margin-left: -10px;
	color: #aaa;
}
.four_qq{
	background: url(../img/pic2.png) no-repeat center top;
	height: 100%;
	margin-top: -300px;
	margin-left: 400px;
}

.beijing3 {
	background: url(../img/c.jpg) no-repeat center top;
	height: 100%;
	background-attachment: fixed;
}
.five_part {
	height: 657px;
	/*border: 1px solid red;*/
	margin-top: 580px;
	background: #fff;
	overflow: hidden;
}

.five_part>.five_main {
	width: 1200px;
	height: 100%;
	/*border: 1px solid skyblue;*/
	margin: 0 auto;
	position: relative;
}

.five_text {
	/*border: 1px solid black;*/
	width: 600px;
	height: 560px;
	position: absolute;
	top: 80px;
	left: 200px;
	overflow: hidden;
	margin-left: 300px;
}

.five_text>h2 {
	font-size: 50px;
	font-weight: 400;
	line-height: 72px;
	text-align: right;
	letter-spacing: 12px;
}

.five_text>h5 {
	font-size: 18px;
	text-align: right;
	color: #aaa;
	font-weight: normal;
	line-height: 30px;
	letter-spacing: 5px;
}


/*#12b7f5*/

.five_text>a {
	text-decoration: none;
	color: #12B7F5;
	font-size: 20px;
	letter-spacing: 3px;
	margin-left: 480px;
	margin-top: 15px;
	display: block;
	opacity: 0.6;
}

.five_text>ul {
	width: 100%;
	height: 310px;
	/*border: 1px solid black;*/
	margin-left: 238px;
	margin-top: -55px;
}

.five_text>.tubiao {
	background: url(../img/qblog_figs.png) no-repeat 190px 41px;
	height: 100px;
	margin-left: 105px;
	margin-top: 35px;
}

.five_text>ul>li {
	list-style: none;
	float: left;
	margin-left: 38px;
	height: 90px;
	border-right: 1px solid #ddd;
}


.five_text>ul>li>span {
	margin-top: 70px;
	display: block;
	padding-right: 15px;
	margin-left: -1px;
	color: #aaa;
}
.five_qq{
	background: url(../img/pic3.png) no-repeat center top;
	height: 100%;
	margin-top: 150px;
	margin-left: -500px;
}

.six_part{
	height: 300px;
	background: #2A2A2A;
	font-size: 40px;
	border: 1px solid #fff;
	
}
.six_part>div{
	color: #fff;
	margin: 120px auto;
	width: 600px;
	text-align: center;
}


.nav_show{
	position: fixed;
	top: 0px;
	z-index: 9999;
	background: #fff;
	height: 75px;
	/*border: 1px solid black;*/
	overflow: hidden;
	width: 100%;
	
}
.nav_show>.nav{
	margin: 0 auto;
	width: 1200px;
	height: 75px;
	/*border: 1px solid black;*/
	margin: 0 auto;
}
